Display Refresh Rate Adjustment for Power Savings
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Solution Overview
Problem
Existing display systems face challenges in smoothly transitioning between different refresh rates without noticeable visual manifestations, which affects power consumption and user experience.
Innovation Solution
The system adjusts refresh rates by increasing horizontal and vertical blanking periods, selectively refreshing display lines, and sending pixels multiple times, while maintaining a constant pixel clock to reduce power usage and minimize visual disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the refresh rate is adjusted dynamically to save power, then power consumption is reduced, but visual artifacts and noticeable transitions occur
Solution Approach 1:
The patent applies preliminary action by pre-planning refresh rate transitions to occur at natural scene cuts or transitions. The system analyzes video content to identify appropriate moments before initiating refresh rate changes, ensuring that visual artifacts occur during natural breaks in the content rather than during important visual information.
Solution Approach 2:
The patent implements dynamics by making the refresh rate adjustable and variable based on content requirements. The system dynamically switches between different refresh rates (e.g., 60Hz, 30Hz, 15Hz) depending on the complexity of the displayed content and the importance of visual information, allowing optimization of power consumption while maintaining visual quality when needed.
2Use of energy by moving object
If a mode switch is performed to adjust refresh rates, then power savings are achieved, but the transition is not smooth and is noticeable to the user
Solution Approach 1:
The system performs preliminary analysis of the video content to identify natural transition points before executing refresh rate changes. By planning transitions in advance at appropriate moments (scene cuts, transitions), the system ensures smooth user experience while achieving power savings.
Solution Approach 2:
The patent maintains continuity of useful action by ensuring that refresh rate transitions occur during natural content transitions rather than interrupting important visual information. The display continues to provide useful visual output throughout the transition, masking the refresh rate change from the user.
3Use of energy by moving object
If the refresh rate is reduced to minimum needed rate, then power consumption decreases, but the display may not accommodate frame to frame changes properly
Solution Approach 1:
The patent implements a dynamic refresh rate system that adjusts the display refresh rate based on the actual content being displayed. For static or slowly changing content, the system reduces the refresh rate to save power, while automatically increasing it when fast frame-to-frame changes are detected, ensuring reliable display of all content types.
Solution Approach 2:
The system employs feedback mechanisms by continuously monitoring the content being displayed and adjusting the refresh rate accordingly. The display controller analyzes frame differences and content complexity in real-time, providing feedback to the refresh rate control logic to determine the appropriate refresh rate for maintaining visual quality while optimizing power consumption.
Data Source
AI summary
A display refresh system, method and computer program product are provided. In use, a refresh rate is adjusted for power saving purposes, and/or any other purpose(s) for that matter. Further, various embodiments are provided for reducing visual manifestations associated with a transition between a first refresh rate and a second refresh rate.